ThatQuiz Test Library Take this test now
How to use a telescope - Exam
Contributed by: Simpson
  • 1. What is the primary purpose of a telescope?
A) To take pictures of the moon.
B) To magnify objects directly.
C) To track satellites.
D) To gather and focus light.
  • 2. What is the aperture of a telescope?
A) The length of the telescope tube.
B) The diameter of the objective lens or mirror.
C) The weight of the telescope.
D) The magnification power of the eyepiece.
  • 3. Which type of telescope uses lenses to gather and focus light?
A) Reflecting telescope.
B) Refracting telescope.
C) Catadioptric telescope.
D) Radio telescope.
  • 4. Which type of telescope uses mirrors to gather and focus light?
A) Refracting telescope.
B) Catadioptric telescope.
C) Radio telescope.
D) Reflecting telescope.
  • 5. What does the term 'focal length' refer to?
A) The distance between the lens/mirror and the focal point.
B) The length of the telescope tube.
C) The width of the lens/mirror.
D) The magnification of the telescope.
  • 6. What is the purpose of the eyepiece?
A) To magnify the image formed by the objective.
B) To filter out unwanted light.
C) To gather light from distant objects.
D) To focus light into the telescope.
  • 7. How is the magnification of a telescope calculated?
A) Focal length of objective + Focal length of eyepiece.
B) Focal length of objective / Focal length of eyepiece.
C) Focal length of objective * Focal length of eyepiece.
D) Focal length of eyepiece / Focal length of objective.
  • 8. What is 'seeing' in astronomy?
A) The clarity of the telescope lens.
B) The steadiness of the atmosphere.
C) The observer's eyesight.
D) The brightness of the target object.
  • 9. What is 'light pollution'?
A) The natural light emitted by stars.
B) The reflection of sunlight off the moon.
C) Excessive artificial light that obscures the night sky.
D) The aurora borealis.
  • 10. Which of these is a type of telescope mount?
A) Equatorial mount.
B) Eyepiece mount.
C) Mirror mount.
D) Lens mount.
  • 11. What does an equatorial mount do?
A) Allows the telescope to rotate horizontally only.
B) Allows the telescope to move up and down only.
C) Keeps the telescope perfectly still.
D) Tracks celestial objects as the Earth rotates.
  • 12. Which of these objects is best viewed with a low magnification eyepiece?
A) Double stars.
B) The Moon's craters.
C) Nebula.
D) Planets.
  • 13. Which of these objects is best viewed with a high magnification eyepiece?
A) Star clusters.
B) Planets.
C) Galaxies.
D) Nebula.
  • 14. What is collimation?
A) Calculating the telescope's magnification.
B) Aligning the optical elements of a telescope.
C) Polishing the telescope lens.
D) Attaching the telescope to the mount.
  • 15. Why is collimation important?
A) To increase the telescope's magnification.
B) To protect the telescope from dust.
C) To make the telescope easier to carry.
D) To achieve the sharpest possible image.
  • 16. What does 'finder scope' do?
A) Automatically tracks stars.
B) Magnifies the image more than the eyepiece.
C) Helps you locate objects in the sky.
D) Filters out light pollution.
  • 17. Which filter is commonly used to reduce light pollution when observing?
A) Solar filter.
B) Moon filter.
C) Color filter.
D) Light pollution filter.
  • 18. What should you NEVER do with a telescope without a proper solar filter?
A) Look directly at the Sun.
B) Look at a planet.
C) Look at the Moon.
D) Look at a bright star.
  • 19. What is the purpose of a dew shield?
A) To make the telescope more stable.
B) To block out light pollution.
C) To prevent dew from forming on the lens.
D) To protect the telescope from rain.
  • 20. When should you start observing with a telescope?
A) During the day.
B) During twilight.
C) After the sky is completely dark.
D) As soon as the sun sets.
  • 21. What is 'star hopping'?
A) Observing stars with a binocular.
B) Observing shooting stars.
C) Using a star chart to find faint objects.
D) Traveling between different star systems.
  • 22. What unit is typically used to measure the aperture of a telescope?
A) Astronomical Units (AU).
B) Light-years.
C) Parsecs.
D) Millimeters or Inches.
  • 23. What type of eyepiece allows for a wider field of view?
A) Plossl eyepiece.
B) Orthoscopic eyepiece.
C) Wide-field eyepiece.
D) Huygenian eyepiece.
  • 24. Which of these telescope designs is known for its portability and ease of use?
A) Schmidt-Cassegrain telescope.
B) Newtonian telescope.
C) Maksutov-Cassegrain telescope.
D) Dobsonian telescope.
  • 25. What is the best practice for cleaning a telescope lens or mirror?
A) Use your breath and a clean shirt.
B) Use a specialized lens cleaning solution and cloth.
C) Use a paper towel.
D) Use regular household cleaner.
  • 26. What is meant by the 'limiting magnitude' of a telescope?
A) The faintest star visible through the telescope.
B) The distance the telescope can see.
C) The brightest star visible through the telescope.
D) The maximum magnification of the telescope.
  • 27. Which atmospheric condition significantly impacts telescope performance?
A) Solar flares.
B) Electromagnetic radiation.
C) Atmospheric turbulence.
D) Gravitational waves.
  • 28. What is astrophotography?
A) Measuring the positions of stars.
B) Drawing pictures of celestial objects.
C) Taking pictures of celestial objects.
D) Studying the chemical composition of stars.
  • 29. What is the purpose of 'drift alignment'?
A) To prevent the telescope from drifting.
B) To accurately align an equatorial mount.
C) To measure the speed of stars.
D) To find the North Star.
  • 30. What type of filter can be used to enhance the visibility of the Moon's surface features?
A) Solar filter.
B) Light pollution filter.
C) Moon filter.
D) Hydrogen-alpha filter.
Created with That Quiz — the site for test creation and grading in math and other subjects.